/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.iotdb.confignode.consensus.request.write.partition;

import org.apache.iotdb.common.rpc.thrift.TConsensusGroupId;
import org.apache.iotdb.common.rpc.thrift.TDataNodeLocation;
import org.apache.iotdb.commons.utils.ThriftCommonsSerDeUtils;
import org.apache.iotdb.confignode.consensus.request.ConfigPhysicalPlan;
import org.apache.iotdb.confignode.consensus.request.ConfigPhysicalPlanType;

import java.io.DataOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;

public class UpdateRegionLocationPlan extends ConfigPhysicalPlan {
    /*which region*/
    TConsensusGroupId regionId;

    /*remove it from the region's location*/
    TDataNodeLocation oldNode;

    /*add it to the region's location*/
    TDataNodeLocation newNode;

    public UpdateRegionLocationPlan() {
        super(ConfigPhysicalPlanType.UpdateRegionLocation);
    }

    /**
     * Constructor
     *
     * @param regionId update the region location
     * @param oldNode  remove the old location
     * @param newNode  add the new location
     */
    public UpdateRegionLocationPlan(
            TConsensusGroupId regionId, TDataNodeLocation oldNode, TDataNodeLocation newNode) {
        this();
        this.regionId = regionId;
        this.oldNode = oldNode;
        this.newNode = newNode;
    }

    @Override
    protected void serializeImpl(DataOutputStream stream) throws IOException {
        stream.writeShort(getType().getPlanType());
        ThriftCommonsSerDeUtils.serializeTConsensusGroupId(regionId, stream);
        ThriftCommonsSerDeUtils.serializeTDataNodeLocation(oldNode, stream);
        ThriftCommonsSerDeUtils.serializeTDataNodeLocation(newNode, stream);
    }

    @Override
    protected void deserializeImpl(ByteBuffer buffer) throws IOException {
        regionId = ThriftCommonsSerDeUtils.deserializeTConsensusGroupId(buffer);
        oldNode = ThriftCommonsSerDeUtils.deserializeTDataNodeLocation(buffer);
        newNode = ThriftCommonsSerDeUtils.deserializeTDataNodeLocation(buffer);
    }

    public TConsensusGroupId getRegionId() {
        return regionId;
    }

    public TDataNodeLocation getOldNode() {
        return oldNode;
    }

    public TDataNodeLocation getNewNode() {
        return newNode;
    }
}
